i was wondering this question the other day when me and my boyfriend were talking about babies. i suppose at 30 its not far around the ****ing corner. my boyfriend wears pants or tighty whities as they are called but they are not white but coloured, but there was an article in a newspaper saying that type of underwear can lower a mans sperm count, so affecting pregancy, but i was wondering is there any solid evidence for it like scientific research. i would hate when the time comes to like ask my boyfriend to switch underwear type